Skip to content
Skip to footer
Cisco.com Worldwide
MENU
CLOSE
Search
Log In
Log Out
Choose Language Selection
us
en
View More
Log In
Log Out
Log In
Have an account?
Personalized content
Your products and support
Log In
Forgot your user ID and/or password?
Manage account
Need an account?
Create an account
Help
Choose Language Selection
us
en
Choose Language Selection
Products & Services
Support & Downloads
Training & Events
Buy
Partners
Support
Technology Support
Optical
Synchronous Optical NETwork (SONET)
Troubleshooting TechNotes
View Documents by Topic
Choose a Topic
Automatic Protection Switching (APS )
Troubleshooting Tools
Automatic Protection Switching (APS )
CRC-16 and CRC-32 on Packet Over SONET Interfaces
02/May/2005
Troubleshooting Tools
Bug Toolkit
Output Interpreter
Automatic Protection Switching (APS )
ASR5000 Switchover of STM1/OC3 Channelized Cards with APS-Mode Redundancy
Configuring Redundancy for POS/APS
Hardware Support for Automatic Protection Switching (APS) in Routers and ATM Switches
Understanding APS Reflector Channel
Understanding APS Versions on POS Interfaces
Packet Over SONET (POS)
ML-MR-10 Configurations to Pass CDP Packets LACP Packets Transparently
Calculating the Maximum Attenuation for Optical Fiber Links
30/Mar/2005
NetPro Discussion Forums on Optical Networking
A Brief Overview of Packet Over SONET APS
A Brief Overview of SONET Technology
Configuring Clock Settings on POS Router Interfaces
Configuring J1 Bytes and Troubleshooting HP-TIM Alarms on POS Line Cards
Inspection and Cleaning Procedures for Fiber-Optic Connections
Introduction to Optical Fibers, dB, Attenuation and Measurements
Measuring the Optical Level through IOS
Plugging a SingleMode Fiber Port Into a Multimode Fiber Port
SONET Graphical Overview
SONET Triggers
Troubleshoot Serial Interfaces on Channelized STM-1/OC-3 SPA
Troubleshooting Bit Error Rate Errors on SONET Links
Troubleshooting NEWPTR Errors on POS Interfaces
Troubleshooting PSE and NSE Events on POS Interfaces
Troubleshooting Physical Layer Alarms on SONET and SDH Links
Understanding Concatenated and Channelized SONET Interfaces on Cisco Routers
Understanding Loopbacks on POS Links
Understanding the Basic Differences Between SONET and SDH Framing in Optical Networks
Understanding the C2 Flag Byte on Packet Over SONET (POS) Interfaces
Understanding the Path Trace Byte (J1) on POS Interfaces
Using an Attenuator on SONET Links
Support Documentation
All Support Documentation for this Series
Troubleshoot and Alerts
Troubleshooting Guides